Page 55 - Das Wunder der Migration bei Tieren
P. 55

Ex ces si ve over he ating in the sun light
                                                    is a risk for birds that flap the ir
                                                    wings con ti nu ally
                                                    thro ug ho ut the day. Ge ese avo id this
                                                    risk by tra ve ling at night. Birds of
                                                    prey that fly by day ha ve no cho ice,
                                                    but day ti me flying is no prob lem for
                                                    the se birds
                                                    be ca use God has cre ated them with
                                                    su pe ri or features. They do not flap
                                                    the ir wings, but gli de through the air
                                                    on hot ther mals.





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